package usb.shuzhushuzu;

public class shuzu {
    public String shuzu(int[] arr) {
        String  str = "[";
        for (int i = 0; i < arr.length; i++) {
            if (i == arr.length - 1) {
                str += arr[i];
                break;
            }
            str += arr[i] + ",";
        }
       return str + "]";
    }
}
